content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
   * Other names may be trademarks of their respective owners.]
   *
   * -----------------------
   * LevelRendererTests.java
   * -----------------------
   * (C) Copyright 2005-2008, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 29-Mar-2005 : Version 1 (DG);
   * 23-Apr-2008 : Added testPublicCloneable (DG);
   *
   */
  
  package org.jfree.chart.renderer.category;
  
  import org.jfree.chart.JFreeChart;
  import org.jfree.chart.LegendItem;
  import org.jfree.chart.axis.CategoryAxis;
  import org.jfree.chart.axis.NumberAxis;
  import org.jfree.chart.plot.CategoryPlot;
  import org.jfree.chart.util.PublicCloneable;
  import org.jfree.data.category.DefaultCategoryDataset;
  import org.junit.jupiter.api.Test;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.ObjectInput;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutput;
  import java.io.ObjectOutputStream;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotSame;
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  /**
   * Tests for the {@link LevelRenderer} class.
   */
  public class LevelRendererTest  {
  
  
  
  
  
      /**
       * Test that the equals() method distinguishes all fields.
       */
      @Test
      public void testEquals() {
          LevelRenderer r1 = new LevelRenderer();
          LevelRenderer r2 = new LevelRenderer();
          assertEquals(r1, r2);
          assertEquals(r2, r1);
  
          r1.setItemMargin(0.123);
          assertFalse(r1.equals(r2));
          r2.setItemMargin(0.123);
          assertEquals(r1, r2);
  
          r1.setMaximumItemWidth(0.234);
          assertFalse(r1.equals(r2));
          r2.setMaximumItemWidth(0.234);
          assertEquals(r1, r2);
  
      }
  
      /**
       * Two objects that are equal are required to return the same hashCode.
       */
      @Test
      public void testHashcode() {
          LevelRenderer r1 = new LevelRenderer();
          LevelRenderer r2 = new LevelRenderer();
          assertEquals(r1, r2);
          int h1 = r1.hashCode();
          int h2 = r2.hashCode();
          assertEquals(h1, h2);
      }
  
      /**
       * Confirm that cloning works.
       */
      @Test
      public void testCloning() throws CloneNotSupportedException {
          LevelRenderer r1 = new LevelRenderer();
          r1.setItemMargin(0.123);
          r1.setMaximumItemWidth(0.234);
          LevelRenderer r2 = (LevelRenderer) r1.clone();
          assertNotSame(r1, r2);
          assertSame(r1.getClass(), r2.getClass());
          assertEquals(r1, r2);
  
          assertTrue(checkIndependence(r1, r2));
  
      }
  
      /**
       * Check that this class implements PublicCloneable.
       */
      @Test
      public void testPublicCloneable() {
          LevelRenderer r1 = new LevelRenderer();
          assertTrue(r1 instanceof PublicCloneable);
      }
  
      /**
       * Checks that the two renderers are equal but independent of one another.
       *
       * @param r1  renderer 1.
       * @param r2  renderer 2.
       *
       * @return A boolean.
       */
      private boolean checkIndependence(LevelRenderer r1, LevelRenderer r2) {
  
          // should be equal...
          boolean b0 = r1.equals(r2);
  
          // and independent...
          r1.setItemMargin(0.0);
          boolean b1 = !r1.equals(r2);
          r2.setItemMargin(0.0);
          boolean b2 = r1.equals(r2);
  
          return b0 && b1 && b2;
  
      }
  
      /**
       * Serialize an instance, restore it, and check for equality.
       */
      @Test
      public void testSerialization() throws IOException, ClassNotFoundException {
  
          LevelRenderer r1 = new LevelRenderer();
  
              ByteArrayOutputStream buffer = new ByteArrayOutputStream();
              ObjectOutput out = new ObjectOutputStream(buffer);
              out.writeObject(r1);
              out.close();
  
              ObjectInput in = new ObjectInputStream(
                  new ByteArrayInputStream(buffer.toByteArray())
              );
          LevelRenderer r2 = (LevelRenderer) in.readObject();
              in.close();
  
          assertEquals(r1, r2);
  
      }
  
      /**
       * Draws the chart with a <code>null</code> info object to make sure that
       * no exceptions are thrown (particularly by code in the renderer).
       */
      @Test
      public void testDrawWithNullInfo() {
              DefaultCategoryDataset dataset = new DefaultCategoryDataset();
              dataset.addValue(1.0, "S1", "C1");
              CategoryPlot plot = new CategoryPlot(dataset,
                      new CategoryAxis("Category"), new NumberAxis("Value"),
                      new LevelRenderer());
              JFreeChart chart = new JFreeChart(plot);
              /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                      null);
  
      }
  
      /**
       * A check for the datasetIndex and seriesIndex fields in the LegendItem
       * returned by the getLegendItem() method.
       */
      @Test
      public void testGetLegendItemSeriesIndex() {
          DefaultCategoryDataset dataset0 = new DefaultCategoryDataset();
          dataset0.addValue(21.0, "R1", "C1");
          dataset0.addValue(22.0, "R2", "C1");
          DefaultCategoryDataset dataset1 = new DefaultCategoryDataset();
          dataset1.addValue(23.0, "R3", "C1");
          dataset1.addValue(24.0, "R4", "C1");
          dataset1.addValue(25.0, "R5", "C1");
          LevelRenderer r = new LevelRenderer();
          CategoryPlot plot = new CategoryPlot(dataset0, new CategoryAxis("x"),
                  new NumberAxis("y"), r);
          plot.setDataset(1, dataset1);
          /*JFreeChart chart =*/ new JFreeChart(plot);
          LegendItem li = r.getLegendItem(1, 2);
          assertEquals("R5", li.getLabel());
          assertEquals(1, li.getDatasetIndex());
          assertEquals(2, li.getSeriesIndex());
      }
  
  }
  